Year	1=low to 6=high
2005	3.475
2006	3.4634146341463414
2007	3.426829268292683
2008	3.451219512195122
2009	3.4634146341463414
2010	3.4634146341463414
2011	3.4761904761904763
2012	3.488095238095238
2013	3.4767441860465116
2014	3.5
2015	3.5121951219512195
2016	3.5
2017	3.5
2018	3.5
2019	3.41025641025641
2020	3.4210526315789473
2021	3.3815789473684212
2022	3.3205128205128207
2023	3.3205128205128207